碳改性Ti_(4)O_(7)阳极电极在流通式体系中高效降解苯酚  

Carbon modified Ti_(4)O_(7)anode electrode in a flow-through system for efficient phenol degradation

作　　者：曹婷 朱敬宇 张一梅 CAO Ting;ZHU Jingyu;ZHANG Yimei(College of Environmental Science and Engineering,North China Electric Power University,Beijing 102206,China;Suzhou Research Institute of North China Electric Power University,Suzhou 215000,China)

机构地区：[1]华北电力大学环境科学与工程学院,北京102206 [2]华北电力大学苏州研究院,江苏苏州215000

出　　处：《环境工程》2025年第1期62-69,共8页Environmental Engineering

基　　金：中央高校优秀青年团队项目(JB2022004)。

摘　　要：Ti_(4)O_(7)由于具有较高的电化学稳定性和电子导电性,广泛应用于电化学领域,并展现出优异的性能。采用抽滤法制备了高性能的碳改性Ti_(4)O_(7)电极膜,并将其用于流通式过滤体系中,实现对苯酚的高效降解。利用SEM、XPS、XRD等对负载不同比例和不同结构碳材料的形貌和晶体结构进行了表征,研究不同催化剂类型和碳材料负载量、施加电压、溶液pH和流速对苯酚降解效率的影响。实验结果表明:当乙炔炭黑(ATCE)添加量为5%,电压为4 V,溶液pH为3.0,流速为1.5 mL/min时,电极膜在流通体系中的氧化通量达到1208.5 mg/(h·m^(2))。比较负载碳材料前后的电化学性能测试结果发现,存在于Ti_(4)O_(7)晶体之间的碳材料显著提升了电子转移速率,这进一步证实了电极表面性质与阳极电催化氧化性能之间的关系,为电极改进和反应器优化提供了新的方向。Ti_(4)O_(7),due to its high electrochemical stability and electronic conductivity,has been widely used in electrochemistry and has shown excellent performance.In this paper,a high-performance carbon modified Ti_(4)O_(7)electrode membrane prepared by extraction and filtration method was used in a flow-through filtration system to achieve efficient phenol degradation.SEM,XPS,and XRD were used to characterize the morphology and crystal structure of carbon materials with different loading ratios and structures.The effects of different catalysts and carbon material loading,applied voltage,solution pH,and flow rate on the degradation efficiency of phenol were investigated.The results showed that the oxidation flux of the electrode film in the circulation system reached 1208.5 mg/(h·m^(2)),when the addition of acetylene carbon black(ATCE)was 5%,the voltage was 4 V,the solution pH was 3.0,and the flow rate was 1.5 mL/min.Comparing the electrochemical performance test results before and after the loading of carbon material,it was found that the presence of carbon material between the Ti_(4)O_(7)crystals significantly improved the electron transfer rate.This paper further confirms the electrode surface properties and the relationship between the anode electric catalytic oxidation performance,and provides a new path for the electrode reactor optimization.

关 键 词：Ti_(4)O_(7) 阳极氧化 流通式体系 苯酚 超氧自由基 

分 类 号：X703[环境科学与工程—环境工程]